// 导出页面为PDF格式
// import html2Canvas from 'html2canvas'
// import JsPDF from 'jspdf'
export default {
  install(Vue, options) {
    Vue.prototype.getPdf = function () {
      this.$confirm(
        "请确认是否下载安信小宝报告至本地",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "info"
        }
      )
        .then(() => {
          var title = this.htmlTitle
          html2Canvas(document.querySelector('.pdfDom'), {
            allowTaint: true,
            useCORS: true
          }).then(function (canvas) {
            let contentWidth = canvas.width
            let contentHeight = canvas.height
            let pageHeight = contentWidth / 592.28 * 841.89
            let leftHeight = contentHeight
            let position = 0
            let imgWidth = 595.28
            let imgHeight = 592.28 / contentWidth * contentHeight
            let pageData = canvas.toDataURL('image/jpeg', 1.0)
            let PDF = new JsPDF('', 'pt', 'a4')
            if (leftHeight < pageHeight) {
              PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
            } else {
              while (leftHeight > 0) {
                PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
                leftHeight -= pageHeight
                position -= 841.89
                if (leftHeight > 0) {
                  PDF.addPage()
                }
              }
            }
            PDF.save(title + '.pdf')
          }
          )
        })
        .catch(() => { });
      // var title = this.htmlTitle
      // var element = document.querySelector('.pdfDom');
      // var w = element.width;
      // var h = element.height;
      // var offsetTop = element.offsetTop;
      // var offsetLeft = element.offsetLeft;
      // var canvas = document.createElement('canvas');
      // var abs = 0;
      // var win_i = window.width;
      // var win_o = window.innerWidth;
      // if (win_o > win_i) {
      //   abs = (win_o - win_i) / 2;
      // }
      // canvas.width = w * 2;
      // canvas.height = h * 2;
      // var context = canvas.getContext('2d');
      // context.scale(2, 2);
      // context.translate(-offsetLeft - abs, -offsetTop);

    }
  }
}
